michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsPluginManifestLineReader_h_
michael@0: #define nsPluginManifestLineReader_h_
michael@0: 
michael@0: #include "nspr.h"
michael@0: #include "nsDebug.h"
michael@0: 
michael@0: #ifdef XP_WIN
michael@0: #define PLUGIN_REGISTRY_FIELD_DELIMITER '|'
michael@0: #else
michael@0: #define PLUGIN_REGISTRY_FIELD_DELIMITER ':'
michael@0: #endif
michael@0: 
michael@0: #define PLUGIN_REGISTRY_END_OF_LINE_MARKER '$'
michael@0: 
michael@0: class nsPluginManifestLineReader
michael@0: {
michael@0:   public:
michael@0:     nsPluginManifestLineReader() {mBase = mCur = mNext = mLimit = 0;} 
michael@0:     ~nsPluginManifestLineReader() { if (mBase) delete[] mBase; mBase=0;}
michael@0:     
michael@0:     char* Init(uint32_t flen) 
michael@0:     {
michael@0:       mBase = mCur = mNext = new char[flen + 1];
michael@0:       if (mBase) {
michael@0:         mLimit = mBase + flen;
michael@0:         *mLimit = 0;
michael@0:       }
michael@0:       mLength = 0;
michael@0:       return mBase;
michael@0:     }
michael@0:     
michael@0:     bool NextLine()
michael@0:     {
michael@0:       if (mNext >= mLimit)
michael@0:         return false;
michael@0:       
michael@0:       mCur = mNext;
michael@0:       mLength = 0;
michael@0:       
michael@0:       char *lastDelimiter = 0;
michael@0:       while(mNext < mLimit) {
michael@0:         if (IsEOL(*mNext)) {
michael@0:           if (lastDelimiter) {
michael@0:             if (lastDelimiter && *(mNext - 1) != PLUGIN_REGISTRY_END_OF_LINE_MARKER)
michael@0:               return false;
michael@0:             *lastDelimiter = '\0';
michael@0:           } else {
michael@0:             *mNext = '\0';
michael@0:           }
michael@0: 
michael@0:           for (++mNext; mNext < mLimit; ++mNext) {
michael@0:             if (!IsEOL(*mNext))
michael@0:               break;
michael@0:           }
michael@0:           return true;
michael@0:         }
michael@0:         if (*mNext == PLUGIN_REGISTRY_FIELD_DELIMITER)
michael@0:           lastDelimiter = mNext;
michael@0:         ++mNext;
michael@0:         ++mLength;
michael@0:       }
michael@0:       return false;        
michael@0:     }
michael@0: 
michael@0:     int ParseLine(char** chunks, int maxChunks)
michael@0:     {
michael@0:       NS_ASSERTION(mCur && maxChunks && chunks, "bad call to ParseLine");
michael@0:       int found = 0;
michael@0:       chunks[found++] = mCur;
michael@0:       
michael@0:       if (found < maxChunks) {
michael@0:         for (char* cur = mCur; *cur; cur++) {
michael@0:           if (*cur == PLUGIN_REGISTRY_FIELD_DELIMITER) {
michael@0:             *cur = 0;
michael@0:             chunks[found++] = cur + 1;
michael@0:             if (found == maxChunks)
michael@0:               break;
michael@0:           }
michael@0:         }
michael@0:       }
michael@0:       return found;
michael@0:     }
michael@0: 
michael@0:     char*       LinePtr() { return mCur; }
michael@0:     uint32_t    LineLength() { return mLength; }    
michael@0: 
michael@0:     bool        IsEOL(char c) {return c == '\n' || c == '\r';}
michael@0: 
michael@0:     char*       mBase;
michael@0:   private:
michael@0:     char*       mCur;
michael@0:     uint32_t    mLength;
michael@0:     char*       mNext;
michael@0:     char*       mLimit;
michael@0: };
michael@0: 
michael@0: #endif